导航抽屉问题(不显示布局预览) [英] navigation drawer issue (not showing layout preview)
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问题描述
我创建了应用程序并且我想使用导航抽屉菜单，但是当我尝试在导航抽屉 xml 中进行编辑时，出现了正在等待构建完成..."的问题，并且我没有看到布局预览android studio 左侧
相关
此处未找到layout_preview
我尝试了这个 soultion 来解决这个问题，但不幸的是对我不起作用
这是activity_main_drawer.xml
<group android:checkableBehavior="single"><项目android:id="@+id/文章"android:icon="@drawable/ic_menu_camera"android:title="@string/articles"/><项目android:id="@+id/windows"android:icon="@drawable/ic_menu_gallery"android:title="@string/windows"/><项目android:id="@+id/linux"android:icon="@drawable/ic_menu_slideshow"android:title="@string/linux"/><项目android:id="@+id/miscellaneous_devices"android:icon="@drawable/ic_menu_manage"android:title="@string/miscellaneous_devices"/><项目android:id="@+id/information_security"android:icon="@drawable/ic_menu_manage"android:title="@string/information_security"/><项目android:id="@+id/facebook"android:icon="@drawable/ic_menu_manage"android:title="@string/facebook"/></组><item android:title="沟通"><菜单><项目android:id="@+id/nav_share"android:icon="@drawable/ic_menu_share"android:title="分享"/><项目android:id="@+id/nav_send"android:icon="@drawable/ic_menu_send"android:title="发送"/></菜单></项目></菜单>activity_main
包 www.pro.cs_is.com.procsis；导入 android.os.Bundle;导入 android.support.design.widget.FloatingActionButton;导入 android.support.design.widget.Snackbar;导入 android.view.View;导入 android.support.design.widget.NavigationView;导入 android.support.v4.view.GravityCompat;导入 android.support.v4.widget.DrawerLayout;导入 android.support.v7.app.ActionBarDrawerToggle;导入 android.support.v7.app.AppCompatActivity;导入 android.support.v7.widget.Toolbar;导入 android.view.Menu;导入 android.view.MenuItem;公共类 MainActivity 扩展了 AppCompatActivity实现 NavigationView.OnNavigationItemSelectedListener {@覆盖protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);工具栏工具栏 = (工具栏) findViewById(R.id.toolbar);setSupportActionBar(工具栏);DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);ActionBarDrawerToggle 切换 = 新的 ActionBarDrawerToggle(这个，抽屉，工具栏，R.string.navigation_drawer_open，R.string.navigation_drawer_close)；drawer.addDrawerListener(toggle);切换.syncState();NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);navigationView.setNavigationItemSelectedListener(this);}@覆盖公共无效 onBackPressed() {DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);如果 (drawer.isDrawerOpen(GravityCompat.START)) {drawer.closeDrawer(GravityCompat.START);} 别的 {super.onBackPressed();}}@覆盖公共布尔 onCreateOptionsMenu(菜单菜单){//给菜单充气；如果它存在，这会将项目添加到操作栏.getMenuInflater().inflate(R.menu.main, menu);返回真；}@覆盖公共布尔 onOptionsItemSelected(MenuItem item) {//在此处处理操作栏项目的点击.操作栏将//自动处理 Home/Up 按钮上的点击，这么长时间//当您在 AndroidManifest.xml 中指定父活动时.int id = item.getItemId();//不检查SimplifiableIfStatement如果(id == R.id.action_settings){返回真；}返回 super.onOptionsItemSelected(item);}@SuppressWarnings("StatementWithEmptyBody")@覆盖public boolean onNavigationItemSelected(MenuItem item) {//在此处处理导航视图项的点击.int id = item.getItemId();如果(id == R.id.miscellaneous_devices){//处理相机动作} else if (id == R.id.articles) {} else if (id == R.id.windows) {} else if (id == R.id.linux) {} else if (id == R.id.facebook) {} else if (id == R.id.information_security) {}DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);drawer.closeDrawer(GravityCompat.START);返回真；}}<块引用>
更新 1:经过多次尝试，将 IDE 更新到 3.1.2 版后似乎是一个普遍问题，直到现在只有一个 解决方案 尽管它类似于预览中的顶部菜单选项
解决方案
删除该行
tools:showIn="navigation_view"来自 activity_main_drawer.xml 并重建.这为我解决了同样的问题.不知道为什么！！！
问题在 AS 3.1.3(2018 年 6 月 8 日)中得到解决并再次出现(2018 年 6 月 16 日)！！！
新的临时解决方法:
- 从菜单文件中剪下
tools:showIn="navigation_view"行. - 关闭菜单文件.
- 重新打开它并粘贴该行.
- 转到设计并查看应有的菜单.
如果您关闭菜单文件并重新打开它，问题又回来了！仍然没有文本预览.
I created the app and I want to use navigation drawer menu, but when I tried to edit in navigation drawer xml, then the problem "Waiting for build to finish..." happened and I don't see layout previw on left side of android studio
to relate
layout_preview not found here
I tried this soultion to solve this issue but unfortunately not working for me
this is activity_main_drawer.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:showIn="navigation_view">
<group android:checkableBehavior="single">
<item
android:id="@+id/articles"
android:icon="@drawable/ic_menu_camera"
android:title="@string/articles" />
<item
android:id="@+id/windows"
android:icon="@drawable/ic_menu_gallery"
android:title="@string/windows" />
<item
android:id="@+id/linux"
android:icon="@drawable/ic_menu_slideshow"
android:title="@string/linux" />
<item
android:id="@+id/miscellaneous_devices"
android:icon="@drawable/ic_menu_manage"
android:title="@string/miscellaneous_devices" />
<item
android:id="@+id/information_security"
android:icon="@drawable/ic_menu_manage"
android:title="@string/information_security" />
<item
android:id="@+id/facebook"
android:icon="@drawable/ic_menu_manage"
android:title="@string/facebook" />
</group>
<item android:title="Communicate">
<menu>
<item
android:id="@+id/nav_share"
android:icon="@drawable/ic_menu_share"
android:title="Share" />
<item
android:id="@+id/nav_send"
android:icon="@drawable/ic_menu_send"
android:title="Send" />
</menu>
</item>
</menu>
activity_main
package www.pro.cs_is.com.procsis;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.miscellaneous_devices) {
// Handle the camera action
} else if (id == R.id.articles) {
} else if (id == R.id.windows) {
} else if (id == R.id.linux) {
} else if (id == R.id.facebook) {
} else if (id == R.id.information_security) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
Update 1 : After many attempts it's seems a general Issue after update IDE to version 3.1.2, till now there's only one solution which @mtak suggested although it is similar to the top menu options in the preview
解决方案
Remove the line
tools:showIn="navigation_view"
from activity_main_drawer.xml and rebuild. This solved the same problem for me. Don't know why!!!
Problem solved in AS 3.1.3(8 June 2018) and reappeared again (16 June 2018)!!!
New temporary workaround:
- Cut the line
tools:showIn="navigation_view"from the menu file. - Close the menu file.
- Reopen it and paste the line.
- Go to design and see the menu as it should be.
If you close the menu file and reopen it the problem comes back! Still no preview in Text.
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